A motorized roller blind device facilitating flat retraction and extension

Abstract

The utility model discloses a kind of electric roller blind devices facilitating flat retraction, it is related to electric window opening technical field, and it includes: fixed crossbeam;Connecting assembly, symmetrically set at the bottom end of fixed crossbeam;Retracting track, symmetrically set at the bottom end of fixed crossbeam, and located at the side of connecting assembly;Spool assembly, set between two groups of connecting assembly, for realizing the flat retraction of electric roller blind;Spool drive mechanism, set at the top end of fixed crossbeam, and with spool assembly connection.The utility model is cooperatively arranged by fixed crossbeam, connecting assembly, retracting track, spool assembly and spool drive mechanism, not only can realize the automatic retraction of roller blind, but also effectively solve the poor flatness of traditional roller blind, easily wrinkled, unstable operation and other problems, so that roller blind is always in front and back tension state during opening and closing process, realize similar automatic flat retraction, ensure that fabric is neatly wound, without slackening wrinkle, significantly improve the functional performance and service life of roller blind.

Description

Technical Field

[0001] This utility model relates to the field of electric window opening technology, specifically to an electric roller blind device that is easy to open and close smoothly. Background Technology

[0002] Car sunroofs, located on the roof, facilitate air circulation between the inside and outside of the vehicle. Currently, electric roller blinds for car sunroofs are becoming increasingly common in automobiles. The electric roller blind mechanism automatically opens and closes the blind, providing shade, heat insulation, dust protection, and enhancing the aesthetics of the interior. As consumers increasingly demand higher levels of driving comfort and intelligent features, electric roller blind mechanisms have evolved from basic opening and closing functions towards higher precision, lower noise, longer lifespan, and greater flatness. Among these, the ability to smoothly roll up and down the blind is particularly crucial. If the blind experiences wrinkles, skewing, jamming, or uneven rolling during operation, it not only affects aesthetics and sealing but may also lead to accelerated wear and tear on the mechanism, shortened lifespan, and even compromise the overall functionality of the sunroof.

[0003] Current electrically controlled automotive sunroof roller blinds suffer from poor flatness. Existing roller blind devices commonly suffer from unreasonable structural design and insufficient tension control, leading to defects such as uneven opening and closing, jamming, and fabric loosening and wrinkling during actual use. Most traditional devices rely on a single spring or lack an effective tensioning mechanism, failing to maintain uniform fabric tension throughout the entire stroke, causing the blind to sag in the middle or roll off-center. Furthermore, the lack of precise guidance and limiting of the blind's edge strips makes them prone to lateral deviation or twisting, affecting sealing and aesthetics. These problems not only reduce the user experience but also shorten the product's lifespan, failing to meet the current demands for intelligent, comfortable, and high-quality automotive development. Therefore, those skilled in the art urgently need to provide an electric roller blind device for automotive sunroofs.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes an electric roller blind device that is easy to flatten and retract, so as to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows: An electric roller blind device that facilitates smooth opening and closing includes: a fixed beam; connecting components symmetrically arranged at the bottom end of the fixed beam; opening and closing tracks symmetrically arranged at the bottom end of the fixed beam and located on one side of the connecting components; a roller assembly disposed between the two sets of connecting components for realizing the smooth opening and closing of the electric roller blind; and a roller drive mechanism disposed at the top end of the fixed beam and connected to the roller assembly.

[0007] Furthermore, in order to achieve the installation of the roller blind components, the connection between the connecting iron parts and the connecting plastic parts not only ensures the sturdiness of the entire device, but also helps to improve the stability and durability of the overall structure, so that the roller blind maintains good performance during long-term use. The connecting components include connecting iron parts set at the bottom of the fixed crossbeam, and connecting plastic parts are connected to the end of the connecting iron parts away from the roller assembly.

[0008] Furthermore, in order to ensure that the roller blind can be opened and closed according to the predetermined path, and under the limiting action of the track groove, the roller blind can always move in a straight line along the set path during the opening or closing process, avoiding left and right swaying, twisting or deviation, and significantly improving the stability and controllability of operation, the opening and closing track includes a limiting track set at the bottom of the fixed crossbeam and connected to the connecting plastic parts. The limiting track has a track groove inside on the side near the roller assembly, and a groove is provided at the bottom of the track groove.

[0009] Furthermore, to achieve the rolling function of the blind, the rolling action of the sunshade blind can be quickly responded to and operated synchronously under the action of the handle and the tensioning component. It also imitates the automatic rewinding mechanism of a steel tape measure. After stopping, it can still rely on elastic potential energy to complete the rolling action, making the whole process smoother and more natural, and significantly improving user satisfaction. The roller assembly includes a tensioning component set between two sets of connecting iron parts. The outer side of the tensioning component is provided with the blind fabric. The side of the blind fabric away from the tensioning component is provided with a handle. The bottom end of the handle has a round hole. The inside of the round hole and inside the blind fabric is a steel wire. The two ends of the handle are provided with handles inside the track groove. The two ends of the blind fabric are provided with edge strips inside the groove.

[0010] Furthermore, to ensure the flatness of the roll-up, the combined action of the first and second springs ensures that the roller blind remains taut and flat during opening and closing. This ensures that the roller blind is always evenly taut throughout its entire opening and closing stroke, effectively preventing sagging, wrinkling, or wavy deformation in the middle. It can automatically adjust for tension loss due to material aging, temperature changes, or frequent use, continuously maintaining the flatness of the fabric. The tensioning component includes a roller aluminum tube positioned between two sets of connecting iron parts. One end of the roller aluminum tube is equipped with a steel column connected to the connecting iron parts. A spring fixing seat is located on the outer side of the steel column near the connecting iron parts. A first spring is located on the outer side of the spring fixing seat away from the connecting iron parts and on the outer side of the steel column. One end of the roller aluminum tube is equipped with a limiting post connected to the connecting iron parts. A spring seat is located on the outer side of the limiting post near the connecting iron parts. A second spring is located on the outer side of the spring seat away from the connecting iron parts and on the outer side of the limiting post. The diameter of the ends of the first and second springs away from the connecting iron parts gradually decreases along the direction close to the center of the roller aluminum tube.

[0011] Furthermore, to achieve the retraction and extension function, the torque output by the motor can be efficiently converted into linear push and pull force through the meshing of the gears and flexible shaft, reducing energy loss. The flexible shaft can move back and forth quickly and smoothly under the drive of the gears, making the sunshade start and stop respond quickly and the opening and closing action more sensitive, significantly improving the user's operating experience. The roller drive mechanism includes a motor mounting base set at the top of the fixed crossbeam, a motor gear cover plate set at the top of the motor mounting base, a gear set inside the motor gear cover plate, and a flexible shaft connected to the handle piece symmetrically meshed on the outside of the gear. A power output pipe is set outside the flexible shaft and outside the motor gear cover plate, and a motor connected to the gear is set at the top of the motor mounting base.

[0012] The beneficial effects of this utility model are as follows: 1. This utility model, through the coordinated arrangement of a fixed crossbeam, connecting components, retractable track, roller assembly, and roller drive mechanism, not only enables the automatic retracting and unfolding of the roller blind, but also effectively solves the problems of poor flatness, easy wrinkling, and unstable operation of traditional roller blinds. It ensures that the roller blind is always in a taut state during opening and closing, achieving a similar automatic flat retracting and unfolding, ensuring that the fabric is neatly wrapped without loosening or wrinkling, and significantly improving the functionality and service life of the roller blind.

[0013] 2. Through the roller assembly, the sunshade can be quickly and synchronously rolled up by the handle and tensioning components. It also mimics the automatic rewinding mechanism of a steel tape measure. After stopping, it can still rely on elastic potential energy to complete the rolling up action, making the whole process smoother and more natural, and significantly improving user satisfaction.

[0014] 3. Through the tensioning component, the roller blind can maintain a taut and flat state during opening and closing, thanks to the combined action of the first and second springs. This ensures that the roller blind is always evenly taut throughout its opening and closing stroke, effectively preventing sagging, wrinkling, or wavy deformation in the middle. It can also automatically adjust for tension loss caused by material aging, temperature changes, or frequent use, continuously maintaining the flatness of the fabric. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is one of the structural schematic diagrams of an electric roller shutter device that is easy to flatten and retract according to an embodiment of the present utility model; Figure 2 yes Figure 1 Enlarged view of point A in the middle; Figure 3 This is a top view of an electric roller shutter device that is easy to flatten and retract according to an embodiment of the present utility model; Figure 4 This is a second structural schematic diagram of an electric roller shutter device that is easy to flatten and retract according to an embodiment of the present utility model; Figure 5 This is a side view of an electric roller shutter device that is easy to flatten and retract according to an embodiment of the present utility model; Figure 6 This is a partial cross-sectional view of the roller drive mechanism in an electric roller blind device that is easy to flatten and retract according to an embodiment of the present utility model. Figure 7 This is a partial cross-sectional view of the roller assembly in an electric roller blind device that is easy to flatten and retract according to an embodiment of the present utility model. Figure 8 This is a partial schematic diagram of an electric roller shutter device that is easy to flatten and retract according to an embodiment of the present utility model; Figure 9 This is one of the partial three-dimensional assembly drawings of the tensioning component in an electric roller shutter device that is easy to flatten and retract according to an embodiment of the present utility model; Figure 10 This is the second partial three-dimensional assembly view of the tensioning component in an electric roller shutter device that is easy to flatten and retract according to an embodiment of the present utility model; Figure 11 This is one of the partial structural schematic diagrams of the tensioning component in an electric roller shutter device that is easy to flatten and retract according to an embodiment of the present utility model; Figure 12 This is a second partial structural schematic diagram of the tensioning component in an electric roller shutter device that is easy to flatten and retract according to an embodiment of the present utility model.

[0017] In the picture: 1. Fixed crossbeam; 2. Connecting assembly; 201. Connecting iron part; 202. Connecting plastic part; 3. Retracting track; 301. Limiting track; 302. Track groove; 303. Groove; 4. Roller assembly; 401. Tensioning assembly; 4011. Roller aluminum tube; 4012. Steel column; 4013. Spring fixing seat; 4014. First spring; 4015. Limiting post; 4016. Spring seat; 4017. Second spring; 402. Roller blind fabric; 403. Handle rod; 404. Round hole; 405. Steel wire; 406. Handle piece; 407. Edge strip; 5. Roller drive mechanism; 501. Motor fixing seat; 502. Motor gear cover plate; 503. Gear; 504. Flexible shaft; 505. Power output pipe; 506. Motor. Detailed Implementation

[0018] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0019] According to an embodiment of the present invention, an electric roller blind device that is easy to flatten and retract is provided.

[0020] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figures 1-12 As shown, the electric roller blind device for easy flat opening and closing according to an embodiment of the present utility model includes: a fixed beam 1; a connecting component 2 symmetrically arranged at the bottom end of the fixed beam 1; a retractable track 3 symmetrically arranged at the bottom end of the fixed beam 1 and located on one side of the connecting component 2; a roller assembly 4 disposed between the two sets of connecting components 2 for realizing the flat opening and closing of the electric roller blind; and a roller drive mechanism 5 disposed at the top end of the fixed beam 1 and connected to the roller assembly 4.

[0021] In one embodiment, the connecting component 2 includes a connecting iron piece 201 disposed at the bottom end of the fixed crossbeam 1, and a connecting plastic piece 202 is connected to the end of the connecting iron piece 201 away from the roller assembly 4. Under the connection of the connecting iron piece 201 and the connecting plastic piece 202, not only can the sturdiness of the entire device be guaranteed, but it also helps to improve the stability and durability of the overall structure, so that the roller blind can maintain good performance during long-term use.

[0022] In one embodiment, the aforementioned retractable track 3 includes a limiting track 301 located at the bottom of the fixed crossbeam 1 and connected to the connecting plastic part 202. The limiting track 301 has a track groove 302 inside on the side near the roller assembly 4, and a groove 303 is provided at the bottom of the track groove 302. Under the limiting action of the track groove 302, it can ensure that the roller blind always moves in a straight line along the set path during the unfolding or retracting process, avoiding left and right swaying, twisting or deviation, and significantly improving the stability and controllability of operation.

[0023] In one embodiment, the roller assembly 4 includes a tensioning assembly 401 disposed between two sets of connecting iron parts 201. A roller blind fabric 402 is disposed on the outer side of the tensioning assembly 401. A handle 403 is disposed on the side of the roller blind fabric 402 away from the tensioning assembly 401. A circular hole 404 is opened at the bottom end of the handle 403. A steel wire 405 is disposed inside the circular hole 404 and inside the roller blind fabric 402. Handles 406 are disposed at both ends of the handle 403 and inside the track groove 302. Edge strips 407 are disposed at both ends of the roller blind fabric 402 and inside the groove 303. Under the action of the handles 406 and the tensioning assembly 401, the sunshade curtain can achieve rapid response and synchronous operation of the rolling action. And mimicking the automatic rewinding mechanism of a steel tape measure, it can still rely on elastic potential energy to complete the rolling action after stopping, making the whole process smoother and more natural, and significantly improving user satisfaction.

[0024] In one embodiment, the tensioning assembly 401 includes a reel aluminum tube 4011 disposed between two sets of connecting iron parts 201. One end of the reel aluminum tube 4011 is provided with a steel column 4012 connected to the connecting iron part 201. A spring fixing seat 4013 is provided on the outer side of the steel column 4012 near the connecting iron part 201. A first spring 4014 is provided on the outer side of the spring fixing seat 4013 away from the connecting iron part 201 and located on the outer side of the steel column 4012. One end of the reel aluminum tube 4011 is provided with a limiting post 4015 connected to the connecting iron part 201. A spring seat 4016 is provided on the outer side of the limiting post 4015 near the connecting iron part 201. A second spring 4017 is provided at the end of 4016 away from the connecting iron part 201 and outside the limiting post 4015; the diameter of the ends of the first spring 4014 and the second spring 4017 away from the connecting iron part 201 gradually decreases along the direction close to the center of the roller aluminum tube 4011; under the combined action of the first spring 4014 and the second spring 4017, the roller blind can maintain a taut and flat state during opening and closing, ensuring that the roller blind is always in a uniformly taut state throughout the entire opening and closing stroke, effectively avoiding sagging, wrinkling or wavy deformation in the middle, and can automatically adjust the tension attenuation caused by material aging, temperature changes or frequent use, and continuously maintain the flatness of the fabric.

[0025] In one embodiment, the roller drive mechanism 5 includes a motor mounting base 501 mounted on the top of the fixed crossbeam 1. A motor gear cover 502 is mounted on the top of the motor mounting base 501. A gear 503 is mounted inside the motor gear cover 502. A flexible shaft 504, connected to the handle 406, is symmetrically meshed with the outer side of the gear 503. A power output pipe 505 is mounted on the outer side of the flexible shaft 504 and outside the motor gear cover 502. A motor 506, connected to the gear 503, is mounted on the top of the motor mounting base 501. Under the meshing action of the gear 503 and the flexible shaft 504, the torque output by the motor 506 can be efficiently converted into linear push-pull force, reducing energy loss. The flexible shaft can move quickly and smoothly back and forth under gear drive, making the sunshade curtain respond quickly to start and stop, and its opening and closing action more sensitive, significantly improving the user's operating experience.

[0026] In addition, it should be noted that the aforementioned limiting rails 301 are respectively fixedly connected by rivets to the rear fixed crossbeam 1, and the two ends of the front fixed crossbeam 1 are fixed by screws to the connecting plastic parts 202. The two ends of the fixed crossbeam 1 are fixed to the connecting plastic parts 202 by rivets to the connecting iron parts 201. The motor mounting base 501 is fixed to the fixed crossbeam 1 by rivets, and the roller aluminum tube 4011 is installed on the connecting iron parts 201 and the overall aluminum alloy frame structure.

[0027] Furthermore, it should be noted that the second spring 4017 is actually a small spring in practical application, while the first spring 4014 is actually a large spring. The elastic force of the small spring keeps the small spring seat tight and prevents it from falling off. After the large spring passes through the φ4 mm stainless steel column 4012, the thinner end is fixedly wrapped around one end of the steel column 4012, and the other end is tightened onto the spring fixing seat 4013 of the large spring, and then inserted into the other end of the reel aluminum tube 4011. During operation, the motor 506 drives the flexible shaft 504 to move. The end of the flexible shaft 504 is fixed to the handle 406. The fixed handle 406 is installed at both ends of the sliding handle rod 403, which then drives the handle rod 403 to move back and forth, thereby driving the reel aluminum tube 4011 to rotate. At this time, the cross-section of one end of the φ4 mm stainless steel column 4012 is machined into a rectangular shape and inserted into the left connecting iron piece 201, where it cannot rotate. The spring seat 4016, the spring fixing seat 4013, and the reel aluminum tube 4011 rotate. When the roller blind is closed, the flexible shaft 504 rotates, and the first spring 4014 increases the force. When the roller blind stops at any position, the first spring 4014 gives the sunshade fabric a reaction force, keeping the roller blind fabric 402 taut and flat. When the roller blind is opened, the motor 506 drives the flexible shaft 504 to rotate. Since the first spring 4014 and the second spring 4017 need to restore their elasticity, the roller blind is also kept flat front and back, and the roller blind fabric is neatly and smoothly wound on the roller aluminum tube 4011, similar to the principle of a steel tape measure.

[0028] Furthermore, it should be noted that the aforementioned roller blind fabric 402 is actually used as a sunshade fabric, and this roller blind device is suitable for use in vehicles such as the Grivia. This means that the roller blind device is installed on the sunroof of vehicles like the Grivia, making installation very convenient. The retractable track 3 is inserted into the original vehicle's mounting groove and tightened with nuts. Specifically, the roller blind fabric 402 and the steel wire 405 are connected by sewing a continuous thread along the front of the fabric 402 to form a cylinder. The steel wire 405 is then passed through the middle and inserted into the round hole 404 of the sliding handle 406 to securely fix the front end of the sunshade fabric. Edge strips 407 are sewn at both ends of the sunshade fabric, and these edge strips 407 are inserted into corresponding grooves 303 to keep the sunshade fabric flat from side to side.

[0029] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0030] In practical applications, during operation, the motor 506 drives the flexible shaft 504 to move. The end of the flexible shaft 504 is fixed to the handle 406. The fixed handle 406 is installed at both ends of the sliding handle 403, which in turn drives the handle 403 to move back and forth, thereby driving the roller aluminum tube 4011 to rotate. The spring seat 4016 and the spring fixing seat 4013 rotate with the roller aluminum tube 4011. When the roller blind is closed, the flexible shaft 504 is driven to rotate, and the first spring 4014 increases the force. When the roller blind is stopped at any position, the first spring 4014 gives a reaction force to the sunshade fabric, keeping the roller blind fabric 402 taut and flat. When the roller blind is opened, the motor 506 drives the flexible shaft 504 to rotate. Since the first spring 4014 and the second spring 4017 need to restore their elasticity, the roller blind is also kept flat front and back, and the roller blind fabric is neatly and smoothly wound on the roller aluminum tube 4011.

[0031] In summary, by utilizing the above-mentioned technical solution of this utility model, through the coordinated arrangement of the fixed crossbeam 1, connecting component 2, retractable track 3, roller assembly 4, and roller drive mechanism 5, not only can the automatic retracting and unfolding of the roller blind be realized, but it can also effectively solve the problems of poor flatness, easy wrinkling, and unstable operation of traditional roller blinds. This ensures that the roller blind is always in a taut state during opening and closing, achieving a similar effect of automatic flat retracting and unfolding, ensuring that the fabric is neatly wound without loosening or wrinkling, significantly improving the functionality and service life of the roller blind. Furthermore, the roller assembly 4, under the action of the handle 406 and the tensioning component 401, enables a rapid response in the retracting action of the sunshade blind. Simultaneously operating and mimicking the automatic rewinding mechanism of a steel measuring tape, it can still rely on elastic potential energy to complete the rewinding action after stopping, making the whole process smoother and more natural, significantly improving user satisfaction; through the tensioning component 401, under the combined action of the first spring 4014 and the second spring 4017, the roller blind can maintain a front-to-back tension and flatness during opening and closing, ensuring that the roller blind is always in a uniform front-to-back tension state throughout the entire opening and closing stroke, effectively avoiding sagging, wrinkling or wavy deformation in the middle, and can automatically adjust the tension attenuation caused by material aging, temperature changes or frequent use, continuously maintaining the flatness of the fabric.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electric roller blind device that facilitates flat opening and closing, characterized in that, include: Fixed crossbeam (1); The connecting component (2) is symmetrically arranged at the bottom end of the fixed crossbeam (1); The retractable track (3) is symmetrically arranged at the bottom end of the fixed crossbeam (1) and located on one side of the connecting component (2); A roller assembly (4) is disposed between the two sets of connecting assemblies (2) for realizing the smooth opening and closing of the electric roller blind; The connecting assembly (2) includes a connecting iron piece (201) disposed at the bottom end of the fixed crossbeam (1), and a connecting plastic piece (202) is connected to one end of the connecting iron piece (201) away from the reel assembly (4). The take-up and take-down track (3) includes a limiting track (301) disposed at the bottom end of the fixed crossbeam (1) and connected to the connecting plastic part (202). The limiting track (301) has a track groove (302) inside on the side near the roll assembly (4), and a groove (303) is provided at the bottom end of the track groove (302). The roller assembly (4) includes a tensioning assembly (401) disposed between the two sets of connecting iron parts (201). A roller blind fabric (402) is disposed on the outside of the tensioning assembly (401). A handle (403) is disposed on the side of the roller blind fabric (402) away from the tensioning assembly (401). A round hole (404) is opened at the bottom end of the handle (403). A steel wire (405) is disposed inside the round hole (404) and inside the roller blind fabric (402). Handle pieces (406) are provided at both ends of the handle rod (403) and inside the track groove (302), and edge strips (407) are provided at both ends of the roller blind fabric (402) and inside the groove (303). The tensioning assembly (401) includes a coiled aluminum tube (4011) disposed between the two sets of connecting iron parts (201). One end of the coiled aluminum tube (4011) is provided with a steel column (4012) connected to the connecting iron part (201). A spring fixing seat (4013) is provided on the outer side of the end of the steel column (4012) near the connecting iron part (201). A first spring (4014) is provided on the outer side of the end of the spring fixing seat (4013) away from the connecting iron part (201) and located on the outer side of the steel column (4012). One end of the rolled aluminum tube (4011) is provided with a limiting post (4015) connected to the connecting iron piece (201). A spring seat (4016) is provided on the outer side of the end of the limiting post (4015) near the connecting iron piece (201). A second spring (4017) is provided on the end of the spring seat (4016) away from the connecting iron piece (201) and located on the outer side of the limiting post (4015). The reel drive mechanism (5) is located at the top of the fixed crossbeam (1) and is connected to the reel assembly (4).

2. The electric roller shutter device for easy flat operation and retraction according to claim 1, characterized in that, The reel drive mechanism (5) includes a motor mounting base (501) disposed at the top of the fixed crossbeam (1). A motor gear cover plate (502) is disposed at the top of the motor mounting base (501). A gear (503) is disposed inside the motor gear cover plate (502). A flexible shaft (504) connected to the handle (406) is symmetrically meshed on the outside of the gear (503). A power output pipe (505) is disposed on the outside of the flexible shaft (504) and outside the motor gear cover plate (502). A motor (506) connected to the gear (503) is disposed at the top of the motor mounting base (501).

3. The electric roller shutter device for easy flat operation and retraction according to claim 1, characterized in that, The diameter of the end of the first spring (4014) and the second spring (4017) away from the connecting iron piece (201) gradually decreases along the direction close to the center of the spool aluminum tube (4011).

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